package com.lele.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import com.netflix.ribbon.proxy.annotation.Hystrix;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author: lele
 * @date: 2021/3/20 13:53
 * @description:
 */
@Service
public class PaymentService {

    /**
     * 正常访问：肯定OK
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id) {
        return "线程池：" + Thread.currentThread().getName()+"  paymentInfo_OK,id:" + id+"\t"+"哈哈~";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler", commandProperties = {
            @HystrixProperty(name="execution.isolation.thread.timeoutInMilliseconds", value="5000")
    })
    public String paymentInfo_TimeOut(Integer id) {
//        int timeNumber = 5;
//         int age = 10/0;
        try {
            TimeUnit.MILLISECONDS.sleep(3000);
        } catch(InterruptedException e) {
            e.printStackTrace();
        }
//        return "线程池："+ Thread.currentThread().getName()+"  paymentInfo_OK,id" + id+"\t"+"~~"+"耗时（秒）"+timeNumber;
        return "线程池："+ Thread.currentThread().getName()+"  paymentInfo_OK,id" + id+"\t"+"哈哈~~"+"耗时（秒）";
    }

    public String paymentInfo_TimeOutHandler(Integer id) {
        return "线程池："+Thread.currentThread().getName()+"  8001系统繁忙或者运行报错，请稍候再试,id: "+id+"\t"+"(╥╯^╰╥)";
    }

    //======服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            // 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),
            // 请求次数
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),
            // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),
            // 失败率达到多少后跳闸
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60"),
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id) {
        if (id < 0) {
            throw new RuntimeException("******id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功，流水号：" + serialNumber;
    }

    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id) {
        return "id 不能为负数，请稍候再试，id："+id;
    }
}
